NRF
CIRCULATORS Bell & Gossett Cast Iron Wet Rotor Circulators / NRF Description
Materials of Construction
A residential or light commercial, maintenance free, axial flanged, in-line, cast iron, wet rotor circulation pump for hydronic heating systems. UL and cUL Listed.
Pump Body: Cast Iron Impeller: Noryl Shaft: Ceramic Bearings: Double-Sintered Carbon
Operating Data
Warranty
Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH NRF-22 & NRF-9F/LW: 240°F (115°C) NRF-25, NRF-33, NRF-36 & NRF-45: 225°F (107°C)
Bell & Gossett offers a warranty of 3 years from date of manufacture or 18 months from date of installation (which ever comes first) against failure as a result of defects in materials and workmanship.
Specifications Model Number
Single Speed
NRF-9F/LW
Ř Ř
NRF-22
Ř
NRF-25 NRF-33
Three Speed
Ř
Part Number
Standard 60 Cycle Motor Characteristics*
Dimensions Inches (mm)
Flange Sizes Inches - NPT
F.L. Amps
RPM
Shipping Weight lbs. (Kg)
41
0.40
2800
9.3 (4.2)
5 1/8 (130)
92
0.80
2940
9.3 (4.2)
5 1/8 (130)
125
1.20
2950
10.4 (4.7)
A
B
C
Watts
103267
6 3/8 (162)
6 3/16 (157)
5 1/8 (130)
103251
6 3/8 (162)
6 3/16 (157)
6 3/8 (162)
6 3/16 (157)
103417
3/4, 1, 11/4, 11/2
ø
1
Volts
115
103350
6 3/8 (162)
5 9/16 (141)
4 7/8 (124)
125
1.10
2950
10.4 (4.7)
6 3/8 (162)
6 7/8 (175)
5 3/4 (146)
270
2.30
3300
13.1 (6.0)
8 1/2 (216)
7 3/8 (187)
5 3/4 (146)
270
2.30
3300
14.5 (6.6)
NRF-36
Ř
103400
NRF-45
Ř
103404
1, 11/4, 11/2
NRF-9F/LW, NRF-22, NRF-25 and NRF-33 are impedance protected. NRF-36 and NRF-45 are thermally protected. 'LPHQVLRQVDUHDSSUR[LPDWHDQGVXEMHFWWRFKDQJH&RQWDFWIDFWRU\IRUFHUWLILHGGLPHQVLRQV
Single Speed NRF Circulator Performance Curves
Single Speed NRF Circulators
NRF-9F/LW 14
NRF-22
NRF-33
CIRCULATORS Bell & Gossett Cast Iron Wet Rotor Circulators / NRF Reliable, maintenance-free, whisper quiet wet rotor circulators designed for residential and light commercial heating systems.
DuraGlide™ Bearing System (blue areas in cutaway illustration) incorporates several components working together to eliminate seasonal freeze-up Powerful motor with high starting torque provides years of trouble-free operation Three speed motors on select models offer a wide range of hydraulic capabilities
Stabilized, heat resistant, non-metallic impeller. Its closed design improves operating efficiency
One-piece, high-nickel stainless steel stator can isolate the stator from system fluid and maintains precision bearing alignment for longer bearing life
Self-cleaning particle shield protects the shaft and bearings from system start-up debris
Carbon bearings, diamond-like ceramic shaft and generous clearances are more resistant to lime, chloride and oxide build-up Face plate and rotor sleeve feature corrosion resistant stainless steel construction for longer life
Three-Speed NRF Circulator Performance Curves
Optional Zone Pump Relay Control
The ZoneTrol II AZ-1A is a single zone pump relay that turns the pump and boiler on when the thermostat calls for heat. The AZ-1A is ideal when adding a zone to an existing system and can be daisy-chained together to control multiple zones (See page 25.)
Three-Speed NRF Circulators
NRF-25
NRF-36
NRF-45 15
CIRCULATORS Lead-Free Wet Rotor Circulators for Potable Water / NBF & SSF Description A residential or light commercial, maintenance-free, in-line, lead-free* bronze or stainless steel, wet rotor circulator for potable water systems and other applications. Flanged, union or sweat models available. UL and cUL listed. Operating Data Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH NBF-25, NBF-33, NBF-36, NBF-45: 225°F (107°C) $OO2WKHUV r) r& SSF-9
Materials of Construction Pump Body NBF: 100% Lead-Free* Bronze SSF: Stainless Steel Impeller: Noryl Shaft: Ceramic Bearings: Double-Sintered Carbon
Cross Reference
Warranty Bell & Gossett offers a warranty of three years from date of manufacture or 18 months from date of installation (which ever comes first) against failure as a result of defects in materials and workmanship.
&6$FHUWLŵHGWR16)$16,WKDWSURGXFWFRQWDLQVOHVVWKDQOHDGFRQWHQWE\ weight on wetted surface.
C
SUCTION
NBF-9
B
BELL & GOSSETT NBF-8S/LW NBF-9U/LW NBF-10S/LW NBF-12U/LW NBF-12F/LW NBF-18S NBF-22U NBF-22 SSF-22 NBF-25 NBF-33 NBF-36
GRUNDFOS* UM 15-10B5 UP 15-18SU UP 15-18B5 UP 15-42SU UP 15-42SF UP 15-42B5 UP 25-64SU UP 25-64SF UP25-64SF UPS15-58 — UP26-96BF UP26-99BF UP26-64SF UP43-75BF
NBF-45
A
TACO** 003B 006B 006B 005B 005B — 007B 007B 007B 00R-MS 0010B 0011B 0013B 0014B —
*Grundfos is a registered trademark of Grundfos Pumps Corp. **Taco is a registered trademark of Taco, Inc. DISCHARGE
Specifications Model Number
Part Number
NBF-8S/LW NBF-9U/LW
103257LF 103258LF
NBF-10S/LW
Connections
Standard 60 Cycle Motor Characteristics*
Dimensions Inches (mm) A
B
C
Watts
O
Volts
F.L. Amps
1/2" Sweat
5 (127)
5 7/32 (132) 4 7/8 (124)
39
0.39
103259LF
Union** 1/2" Sweat
6 1/8 (156) 5 1/16 (129) 4 7/8 (124) 5 (127) 5 7/32 (132) 4 7/8 (124)
41 55
0.40 0.46
NBF-12F/LW NBF-12U/LW
103260LF 103261LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124) Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
55 55
0.48 0.48
NBF-18S NBF-22
103316LF 103252LF
1/2" Sweat 5 (127) 5 7/32 (132) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124)
90 92
0.74 0.80
NBF-22U NBF-25
103255LF 103418LF
Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 3/16 (157) 5 1/8 (130)
92 125
NBF-33 NBF-36
103351LF 103401LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 3/16 (157) 5 1/8 (130) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 7/8 (175) 5 3/4 (146)
125 270
NBF-45 SSF-9U/LW
103405LF 103360LF
Flange 1, 11/4, 11/2 Union**
8 1/2 (216) 7 3/8 (187) 5 3/4 (147) 6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
270 41
SSF-12F/LW SSF-12U/LW SSF-22
103358LF 103361LF 103357LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124) Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124)
55 55 92
SSF-22U
103362LF
Union**
92
6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
* Impedance protected ** Union Connections are available in 3/4" NPT, 1/2" sweat & 3/4" sweat.
16
1
115
0.80 1.10 1.10 2.30
RPM
9.0 (4.1) 2800
0.80
9.3 (4.2) 9.0 (4.1) 9.5 (4.3) 9.3 (4.2)
3000 2940 2950 3300
0.40 0.48
Shipping Weight lbs. (Kg)
2800 2940
9.0 (4.1) 9.5 (4.3) 9.3 (4.2) 10.4 (4.7) 10.4 (4.7) 13.1 (6.0) 14.5 (6.6) 9.3 (4.2) 9.5 (4.3) 9.3 (4.2) 9.5 (4.3) 9.3 (4.2)
CIRCULATORS Lead-Free Wet Rotor Circulators for Potable Water / NBF & SSF – continued Single Speed–NBF/SSF 60 HZ Performance Curve
Three Speed–NBF 60 HZ Performance Curve
CIRCULATORS Series LR™ Maintenance-Free Circulators Materials of Construction Pump Body: LR-20WR: Cast Iron LR-15BWR: Lead-Free* Bronze Impeller: Noryl® Shaft: Ceramic Bearings: Carbon
&6$FHUWLŵHGWR16)$16,WKDWSURGXFWFRQWDLQVOHVVWKDQ 0.25% lead content by weight on wetted surface.
Operating Data Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH r) r&
LR-15B
LR-20
C
B
A
Specifications Model Number
Part Number
Pump Body Material
Flange Sizes Inches-NPT
LR-20WR LR-15BWR
106507 106514LF
Cast Iron Bronze
3/4, 1, 1-1/4, 1-1/2 3/4, 1, 1-1/4, 1-1/2
Standard 60Hz Motor Characteristics*
A
B
C
Watts
Ø
F.L. Amps
FL Amps
RPM
Approx. Shpg. Wt. lbs (Kg)
6-3/8 (162)
6 (152)
5-3/8 (137)
125
1
115
1.10
2950
10.4 (4.7)
Dimension Inches (mm)
17
Materials of Construction
A residential or light commercial, maintenance free, axial flanged, in-line, cast iron, wet rotor circulation pump for hydronic heating systems. UL and cUL Listed.
Pump Body: Cast Iron Impeller: Noryl Shaft: Ceramic Bearings: Double-Sintered Carbon
Operating Data
Warranty
Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH NRF-22 & NRF-9F/LW: 240°F (115°C) NRF-25, NRF-33, NRF-36 & NRF-45: 225°F (107°C)
Bell & Gossett offers a warranty of 3 years from date of manufacture or 18 months from date of installation (which ever comes first) against failure as a result of defects in materials and workmanship.
Specifications Model Number
Single Speed
NRF-9F/LW
Ř Ř
NRF-22
Ř
NRF-25 NRF-33
Three Speed
Ř
Part Number
Standard 60 Cycle Motor Characteristics*
Dimensions Inches (mm)
Flange Sizes Inches - NPT
F.L. Amps
RPM
Shipping Weight lbs. (Kg)
41
0.40
2800
9.3 (4.2)
5 1/8 (130)
92
0.80
2940
9.3 (4.2)
5 1/8 (130)
125
1.20
2950
10.4 (4.7)
A
B
C
Watts
103267
6 3/8 (162)
6 3/16 (157)
5 1/8 (130)
103251
6 3/8 (162)
6 3/16 (157)
6 3/8 (162)
6 3/16 (157)
103417
3/4, 1, 11/4, 11/2
ø
1
Volts
115
103350
6 3/8 (162)
5 9/16 (141)
4 7/8 (124)
125
1.10
2950
10.4 (4.7)
6 3/8 (162)
6 7/8 (175)
5 3/4 (146)
270
2.30
3300
13.1 (6.0)
8 1/2 (216)
7 3/8 (187)
5 3/4 (146)
270
2.30
3300
14.5 (6.6)
NRF-36
Ř
103400
NRF-45
Ř
103404
1, 11/4, 11/2
NRF-9F/LW, NRF-22, NRF-25 and NRF-33 are impedance protected. NRF-36 and NRF-45 are thermally protected. 'LPHQVLRQVDUHDSSUR[LPDWHDQGVXEMHFWWRFKDQJH&RQWDFWIDFWRU\IRUFHUWLILHGGLPHQVLRQV
Single Speed NRF Circulator Performance Curves
Single Speed NRF Circulators
NRF-9F/LW 14
NRF-22
NRF-33
CIRCULATORS Bell & Gossett Cast Iron Wet Rotor Circulators / NRF Reliable, maintenance-free, whisper quiet wet rotor circulators designed for residential and light commercial heating systems.
DuraGlide™ Bearing System (blue areas in cutaway illustration) incorporates several components working together to eliminate seasonal freeze-up Powerful motor with high starting torque provides years of trouble-free operation Three speed motors on select models offer a wide range of hydraulic capabilities
Stabilized, heat resistant, non-metallic impeller. Its closed design improves operating efficiency
One-piece, high-nickel stainless steel stator can isolate the stator from system fluid and maintains precision bearing alignment for longer bearing life
Self-cleaning particle shield protects the shaft and bearings from system start-up debris
Carbon bearings, diamond-like ceramic shaft and generous clearances are more resistant to lime, chloride and oxide build-up Face plate and rotor sleeve feature corrosion resistant stainless steel construction for longer life
Three-Speed NRF Circulator Performance Curves
Optional Zone Pump Relay Control
The ZoneTrol II AZ-1A is a single zone pump relay that turns the pump and boiler on when the thermostat calls for heat. The AZ-1A is ideal when adding a zone to an existing system and can be daisy-chained together to control multiple zones (See page 25.)
Three-Speed NRF Circulators
NRF-25
NRF-36
NRF-45 15
CIRCULATORS Lead-Free Wet Rotor Circulators for Potable Water / NBF & SSF Description A residential or light commercial, maintenance-free, in-line, lead-free* bronze or stainless steel, wet rotor circulator for potable water systems and other applications. Flanged, union or sweat models available. UL and cUL listed. Operating Data Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH NBF-25, NBF-33, NBF-36, NBF-45: 225°F (107°C) $OO2WKHUV r) r& SSF-9
Materials of Construction Pump Body NBF: 100% Lead-Free* Bronze SSF: Stainless Steel Impeller: Noryl Shaft: Ceramic Bearings: Double-Sintered Carbon
Cross Reference
Warranty Bell & Gossett offers a warranty of three years from date of manufacture or 18 months from date of installation (which ever comes first) against failure as a result of defects in materials and workmanship.
&6$FHUWLŵHGWR16)$16,WKDWSURGXFWFRQWDLQVOHVVWKDQOHDGFRQWHQWE\ weight on wetted surface.
C
SUCTION
NBF-9
B
BELL & GOSSETT NBF-8S/LW NBF-9U/LW NBF-10S/LW NBF-12U/LW NBF-12F/LW NBF-18S NBF-22U NBF-22 SSF-22 NBF-25 NBF-33 NBF-36
GRUNDFOS* UM 15-10B5 UP 15-18SU UP 15-18B5 UP 15-42SU UP 15-42SF UP 15-42B5 UP 25-64SU UP 25-64SF UP25-64SF UPS15-58 — UP26-96BF UP26-99BF UP26-64SF UP43-75BF
NBF-45
A
TACO** 003B 006B 006B 005B 005B — 007B 007B 007B 00R-MS 0010B 0011B 0013B 0014B —
*Grundfos is a registered trademark of Grundfos Pumps Corp. **Taco is a registered trademark of Taco, Inc. DISCHARGE
Specifications Model Number
Part Number
NBF-8S/LW NBF-9U/LW
103257LF 103258LF
NBF-10S/LW
Connections
Standard 60 Cycle Motor Characteristics*
Dimensions Inches (mm) A
B
C
Watts
O
Volts
F.L. Amps
1/2" Sweat
5 (127)
5 7/32 (132) 4 7/8 (124)
39
0.39
103259LF
Union** 1/2" Sweat
6 1/8 (156) 5 1/16 (129) 4 7/8 (124) 5 (127) 5 7/32 (132) 4 7/8 (124)
41 55
0.40 0.46
NBF-12F/LW NBF-12U/LW
103260LF 103261LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124) Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
55 55
0.48 0.48
NBF-18S NBF-22
103316LF 103252LF
1/2" Sweat 5 (127) 5 7/32 (132) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124)
90 92
0.74 0.80
NBF-22U NBF-25
103255LF 103418LF
Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 3/16 (157) 5 1/8 (130)
92 125
NBF-33 NBF-36
103351LF 103401LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 3/16 (157) 5 1/8 (130) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 6 7/8 (175) 5 3/4 (146)
125 270
NBF-45 SSF-9U/LW
103405LF 103360LF
Flange 1, 11/4, 11/2 Union**
8 1/2 (216) 7 3/8 (187) 5 3/4 (147) 6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
270 41
SSF-12F/LW SSF-12U/LW SSF-22
103358LF 103361LF 103357LF
Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124) Union** 6 1/8 (156) 5 1/16 (129) 4 7/8 (124) Flange 3/4, 1, 11/4, 11/2 6 3/8 (162) 5 9/16 (141) 4 7/8 (124)
55 55 92
SSF-22U
103362LF
Union**
92
6 1/8 (156) 5 1/16 (129) 4 7/8 (124)
* Impedance protected ** Union Connections are available in 3/4" NPT, 1/2" sweat & 3/4" sweat.
16
1
115
0.80 1.10 1.10 2.30
RPM
9.0 (4.1) 2800
0.80
9.3 (4.2) 9.0 (4.1) 9.5 (4.3) 9.3 (4.2)
3000 2940 2950 3300
0.40 0.48
Shipping Weight lbs. (Kg)
2800 2940
9.0 (4.1) 9.5 (4.3) 9.3 (4.2) 10.4 (4.7) 10.4 (4.7) 13.1 (6.0) 14.5 (6.6) 9.3 (4.2) 9.5 (4.3) 9.3 (4.2) 9.5 (4.3) 9.3 (4.2)
CIRCULATORS Lead-Free Wet Rotor Circulators for Potable Water / NBF & SSF – continued Single Speed–NBF/SSF 60 HZ Performance Curve
Three Speed–NBF 60 HZ Performance Curve
CIRCULATORS Series LR™ Maintenance-Free Circulators Materials of Construction Pump Body: LR-20WR: Cast Iron LR-15BWR: Lead-Free* Bronze Impeller: Noryl® Shaft: Ceramic Bearings: Carbon
&6$FHUWLŵHGWR16)$16,WKDWSURGXFWFRQWDLQVOHVVWKDQ 0.25% lead content by weight on wetted surface.
Operating Data Maximum Working Pressure: 150 PSI (10 bar) 0D[LPXP2SHUDWLQJ7HPSHUDWXUH r) r&
LR-15B
LR-20
C
B
A
Specifications Model Number
Part Number
Pump Body Material
Flange Sizes Inches-NPT
LR-20WR LR-15BWR
106507 106514LF
Cast Iron Bronze
3/4, 1, 1-1/4, 1-1/2 3/4, 1, 1-1/4, 1-1/2
Standard 60Hz Motor Characteristics*
A
B
C
Watts
Ø
F.L. Amps
FL Amps
RPM
Approx. Shpg. Wt. lbs (Kg)
6-3/8 (162)
6 (152)
5-3/8 (137)
125
1
115
1.10
2950
10.4 (4.7)
Dimension Inches (mm)
17
